Next message: Royer, Doug: "CelNav without sextants"
Timing meridian passage is very imprecise.
(How do you intend to detect this moment?
With your compass?)
Even WITH a sextant it is hard to time a
meridian passage with reasonable precision.
One can probably improvise something crude
to measure altitudes, that it to replace sextant,
but I suppose this will be also VERY imprecise.
My question was related to reasonably precise
methods (of roughly the same order in
precision as the usual methods involving a sextant).
So far I see only those two mentioned in my previous message.
(timing occultations and rise/set).
Alex.
On Tue, 2 Nov 2004, Mike Boersma wrote:
> Given GMT and an almanac, you can still do a noon sight for latitude and
> longitude (use the equation of time on the daily page to establish
